Shell plc operates as an energy and petrochemical company Europe, Asia, Oceania, Africa, the United States, and Rest of the Americas. The company operates through Integrated Gas, Upstream, Marketing, Chemicals and Products, and Renewables and Energy Solutions segments. It explores for and extracts crude oil, natural gas, and natural gas liquids; markets and transports oil and gas; produces gas-to-liquids fuels and other products; and operates upstream and midstream infrastructure to deliver gas to market. The company also markets and trades natural gas, liquefied natural gas (LNG), crude oil, electricity, carbon-emission rights; and markets and sells LNG as a fuel for heavy-duty vehicles. In addition, it trades in and refines crude oil and other feed stocks, such as low-carbon fuels, lubricants, bitumen, sulphur, gasoline, diesel, aviation fuel, and marine fuel; produces and sells petrochemicals for industrial use; and manages oil sands activities. Further, the company produces base chemicals comprising ethylene, propylene, and aromatics, as well as intermediate chemicals, such as styrene monomer, propylene oxide, solvents, detergent alcohols, ethylene oxide, and ethylene glycol. Additionally, it generates electricity through wind and solar resources; produces and sells hydrogen; and provides electric vehicle charging services. The company was formerly known as Royal Dutch Shell plc and changed its name to Shell plc in January 2022. Shell plc was founded in 1907 and is headquartered in London, the United Kingdom.

Loop Industries, Inc., a technology company, focuses on depolymerizing waste polyethylene terephthalate PET plastics and polyester fibers, including plastic bottles, packaging, carpets and textiles of any color, transparency and even ocean plastics that have been degraded by the sun and salt, to its base building blocks. Its polymerized monomers into virgin-quality PET resins for use in food-grade plastic packaging, such as plastic bottles for water and carbonated soft drinks, and containers for food and other consumer products; and polyester fibers, including textiles, clothing, and apparel. Loop Industries, Inc. was incorporated in 2010 and is based in Terrebonne, Canada.

374Water Inc. provides a technology that transforms wet wastes into recoverable resources in the United States. The company transforms wet wastes, including sewage sludge, biosolids, food waste, hazardous and non-hazardous waste, and forever chemicals. It offers AirSCWO systems, a waste stream treatment system based on supercritical water oxidation that are used to treat various hazardous and non-hazardous waste streams. It serves Industrial, agricultural, defense, oil and gas, waste management, sanitation project, environmental remediation and compliance, and municipal markets. 374Water Inc. is based in Durham, North Carolina.

Recon Technology, Ltd. provides hardware, software, and on-site services to companies in the petroleum mining and extraction industry in the People's Republic of China. The company offers equipment, tools, and other components and parts related to oilfield production and other energy industries; and develops and sells industrial automation control and information solutions. It is also involved in designing, testing, and implementing solutions for sewage, oily sludge treatment; and produces and sells integrated equipment and project services. In addition, the company develops, upgrades, and maintains online operation platform of gas stations, marketing, and promotion related services, as well as engages in production and efficiency of exploited oil wells business and plastic chemical cycle activities. Further, it provides equipment for oil and gas production and transportation, including heating furnaces, burner, waste water and oil treatment products and services, chemical recycling plan, automation system and service; and operates platform services comprising of intelligent marketing system and digitalization solution for gas stations. Additionally, the company offers equipment and accessories. Recon Technology, Ltd. was incorporated in 2007 and is headquartered in Beijing, the People's Republic of China.

LiqTech International, Inc., a clean technology company, designs, develops, produces, markets, and sells automated filtering systems, ceramic silicon carbide liquid applications, and diesel particulate air filters in the United States, Canada, Europe, Asia, and South America. The company operates through Water, Ceramics, and Plastics segments. It also manufactures and sells silicon carbide ceramic filtration technologies for liquid and gas purification; and diesel particulate filters for exhaust emission control solutions to the verified retrofit and the original equipment manufacturer market. In addition, the company develops, manufactures, and sells liquid filtration systems, which are used for the marine scrubber systems, filtration of produced water, industrial applications, pool and spa water, food and beverage application, and silicon carbide membrane technology. Further, it provides flexible and plastics manufacturing products for machining, welding, bending, and solvent cementing. LiqTech International, Inc. sells its products primarily to industrial customers through direct sales, systems integrators, distributors, agents, and partners. The company was formerly known as Blue Moose Media, Inc. and changed its name to LiqTech International, Inc. in October 2011. LiqTech International, Inc. was founded in 2000 and is headquartered in Ballerup, Denmark.

Aqua Metals, Inc. engages in reinventing metals recycling activities with its patented AquaRefining technology. The company's technology produces metals and alloys that can be returned into the battery manufacturing supply chain markets, as well as sells metals for use in various advanced manufacturing industries. Its AquaRefining, a low-emissions and recycling technology that replaces polluting furnaces and hazardous chemicals with electricity-powered electroplating to recover valuable metals and materials from spent batteries. Aqua Metals, Inc. was incorporated in 2014 and is headquartered in Reno, Nevada.

Advent Technologies Holdings, Inc., an advanced materials and technology development company, operates in the fuel cell and hydrogen technology markets in North America, Europe, and Asia. It develops, manufactures, and assembles fuel cell systems and critical components that determine the performance of hydrogen fuel cells and other energy systems. The company offers high-temperature proton exchange membrane (HT-PEM) fuel cells; and electrodes for applications in the fuel cell and energy storage markets, as well as membrane electrode assemblies. It is also involved in the design of fuel cell stacks for stationary power, portable power, automotive, aviation, energy storage and sensor markets. The company is headquartered in Livermore, California.

Flexible Solutions International, Inc., together with its subsidiaries, develops, manufactures, and markets specialty chemicals that slow the evaporation of water in Canada, the United States, and internationally. The company operates in two segments, Energy and Water Conservation Products, and Biodegradable Polymers. The company offers thermal polyaspartates (TPAs) for oilfields to reduce scale and corrosion in various water systems; and for the agricultural industry to reduce fertilizer crystallization before, during, and after application, as well as to prevent crystal formation between fertilizer and minerals present in the soil. It also provides TPAs for irrigation to prevent early plugging of drip irrigation ports, reduce maintenance costs, and lengthen the life of equipment; TPAs for cleaning products to prevents the re-deposition of dirt onto the surfaces; and TPAs as additives for household laundry detergents, consumer care products, and pesticides. In addition, the company offers nitrogen conservation products for agriculture that slow down nitrogen loss from fields. Further, it provides HEATSAVR, a chemical product for use in swimming pools and spas that forms a thin and transparent layer on the water's surface; and WATERSAVR to reduce water evaporation in reservoirs, potable water storage tanks, livestock watering ponds, aqueducts, canals, and irrigation ditches, as well as for lawn and turf care, and potted and bedding plants. The company was incorporated in 1991 and is headquartered in Taber, Canada.